Feat: Add Basic Lua Test Suite (#115)

This MR adds a Lua test suite to the project, run via busted, and introduces tests for a number of the utility functions. Subsequent work will have to be done to test functions that use the `vim.api` scope and external packages to the plugin.

.github/workflows/go.yaml

@@ -4,7 +4,23 @@ on:
     branches:
       - main
 jobs:
-  build:
+  go_lint:
+    name: Lint Go 💅 
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-go@v4
+        with:
+          go-version: '1.19'
+          cache: false
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v3
+        with:
+          version: v1.54
+          only-new-issues: true
+  go_test:
+    name: Test Go 🧪 
+    needs: [go_lint]
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3